I rebuilt my C4 last fall. I remember one of the servo covers having an o-ring to seal it but the other had a paper gasket. I am finally installing the transmission today. Before I fill it and discover a leak, should I have used gasket sealant on the paper gasket? It was a 'H' servo, and to be honest, the aluminum was pretty deteriorated at one spot. I really don't want to fill this thing and find a leak. I may even swap out the 'H' servo for an 'A' servo I have. Did I mention I really don't want this thing to leak?